Custom field display in category view

<table width="100%"> <?php $this->fieldsClass->prefix = ''; foreach ($this->fields as $fieldName => $oneExtraField) { if(empty($variant->$fieldName) && !empty($this->element->main->$fieldName)){ $variant->$fieldName = $this->element->main->$fieldName; } if(!empty($variant->$fieldName)) $variant->$fieldName = trim($variant->$fieldName); if (!empty ($variant->$fieldName)) { ?> <tr class="hikashop_product_custom_<?php echo $oneExtraField->field_namekey;?>_line"> <td class="key"> <span id="hikashop_product_custom_name_<?php echo $oneExtraField->field_id;?>_<?php echo $variant_name;?>" class="hikashop_product_custom_name"> <?php echo $this->fieldsClass->getFieldName($oneExtraField);?> </span> </td> <td> <span id="hikashop_product_custom_value_<?php echo $oneExtraField->field_id;?>_<?php echo $variant_name;?>" class="hikashop_product_custom_value"> <?php echo $this->fieldsClass->show($oneExtraField,$variant->$fieldName); ?> </span> </td> </tr> <?php } } ?> </table>

Notice: Undefined property: ProductViewProduct::$fields in C:\xampp\htdocs\...\components\com_hikashop\views\product\tmpl\listing_img_title.php on line 90Warning: Invalid argument supplied for foreach() in C:\xampp\htdocs\...\components\com_hikashop\views\product\tmpl\listing_img_title.php on line 90

<span class='hikashop_product_pure_list'> <?php if ($this->config->get('show_code')) { ?> <?php if($this->params->get('link_to_product_page',1)){ ?> <a href="<?php echo $link;?>"> <?php } echo $this->get($oneExtraField,$value); if($this->params->get('link_to_product_page',1)){ ?> </a> <?php } ?> <?php } ?> </span>

Notice: Undefined variable: oneExtraField in C:\xampp\htdocs\...\components\com_hikashop\views\product\tmpl\listing_img_title.php on line 90 Notice: Undefined variable: value in C:\xampp\htdocs\...\components\com_hikashop\views\product\tmpl\listing_img_title.php on line 90

echo $this->row->putity;